Self-adjusting clevis



(No Model.)

I 1: y e "II p O O O A /1 :2? E 6 e w A" I I I l vivtweooea, 51:40am l'oz rricE.

DENNIS B. HENRY, OF INDIAN BAYOU, LOUISIANA.

SELF-ADJUSTING crews.

SPECIFICATION forming part of Letters Patent No. 394,923, dated December 18, 1888.

Application filed August 4, 1888. Serial No. 281,961. (No model.)

To all whom it may concern.-

Be it known that I, DENNIS B. HENRY, a citizen of the United States, residing at Indian Bayou, in the'parish of Yer-million and State of Louisiana, have invented a new and useful Improvement in Self-Adj usting Clevises, of which the following is a specification.

The invention relates to self-adjusting clevises which may be applied to plows, cultivators, or any kinds of implements that are provided with guiding-hamlles, the object being to enable the operator or driver to easily guide the implement straightand prevent its leaving the proper line of draft; and it consists in the construction and novel combination of parts hereinafter described, illustrated in the accompanying drawings, and pointed out in the appended claims.

Figure 1 of the drawings represents a perspective view of a plow having a clevis embodying the invention attached. Fig. 2 represents a reversed plan view thereof. Fig. 3 represents a front end view of the same. Fig. 4 is a longitudinal section.

Referring to the drawings by letter, A designates a plow having the beam B, the handles C, and the share or blade D at the lower end of a suitable standard secured to the plow-beam at its upper end at a suitable point and in a suitable manner.

E is the clevis, provided with the vertical plate 6, having the vertical series of adjusting engaging-openings e for the attachment of the draft-hook (not shown) of the plow, and the horizontal arm F, extendinginward from a proper point of the inner edge of said plate and having its inner end pivoted to the under surface of the plow-beam at a point vertically above that portion of the plowshare at which the greatest resistance is met with when the said share penetrates the soil. The clevisplate a has standing inward from its top a projection, e", that extends over the outer or front end of the plow-beam and aids in sup porting the clevis when necessary.

G is an anti-friction roller j ournaled on the arm F below the front end of the plow-beam and in front of the circumferential shoulder g 011 said arm, and H is a bearing loop or strap of plate metal secured to the lower surface of the front end of the plow-beam.

The

anti-friction roller fits and moves in said bearing-loop, which is rounded. at the ends on the same arc as the circumference of the roller, so that the latter does not jar perceptibly when it rolls into either end.

I is a brace-bar extending from the lower end of the plate 6 below the bearing-loop and having its rear end secured to the arm F ata suitable point. The said bar is notabsolutely necessary, but itis preferable to have it form part of the mechanism, as it is integral with the lower end of the plate 6, and by connection with the arm F reenforces the junction of said arm and plate and keeps the latter vertical.

The clevis not being secured to the end of the plow-beam, but having its arm pivoted at the inner end to said beam over the greatest point of resistance of the plowshare in the soil, can exercise no leverage from the outer end of the plow-beam to the pivoted point of said arm F, so that if the team changes its line of draft the share cannot easilybethrown to one side ando'ut of the original line of draft; but the operator or driver can by means of the leverage of the handles keep the share in the line of draft with little exertion of force, as the point of greatest resistance of the share forms really a pivotal point upon which the handles maybe turned. This action also permits the driver to keep the plowshare with little exertion at an even depth below the soil. The vertical adjustment of the clevis is performed by the series of openings 0' and the draft-hook (not shown) of the plow.

In a cultivator or other implement, in which one share or more than one share may be used, the pivoted point of the arm of the clevis is placed vertically above that point at which the greatest resistance to draft occurs,

which may be either above or below the sur face of the soil.

Having described my invention, I claim 1. The combination, with the plow-beam, of the transverse bearingdoop H, secured to the front end thereof, the arm F, having the roller G engaging the loop, and. the vertical plate 6, having the adjusting-openings e, the rearward projection e at its upper end wor ing on the upper side of the plow-beam and the rearward-extendi 11g arm I at its lower end,

the rear end of said arm being secured to arm F and the front end of the latter being secured to plate 0, substantially as described.

2. In a plow, the Combination, with the beam B, the handle C, and the 1)l.()\\"Sll21ll'6 l), of the elevis E, having the pivotal arm F, and the plate 0, provided with the adjnstiilg-openings e, the anti-friction roller on the arm 11, and the metal-strap hearing-loop ll secured transversely to the lower snrtaee of the front end of the plmv-heam, Substantially as speei fied.

3. In a plow, the combination, with the plowheam, the handles and the plowahare D, of"

the ClOVlS provided with the pivoted arm F, the plate 6, the en gaging-openings e, the pro jeetion (4*, and the brace-bar l, the 't'rietionroller j onrnaled in the arm I, and the bearing loop ll, Secured to the plow-beam, substantially as specified.

In testimony that I elaim the foregoing as my own 1 have hereto affixed my signature in the presenee of two witnesses.

'IIICNN'IS l3. IllilNlii'.

\Vi tnesses:

GEO. W. SUMMERS, .I. A. lJG'ALtIRP). 

